Coexistence of pseudo-gap and charge order at the hot spots in cuprate superconductors

Abstract : We address the timely issue of the presence of charge ordering at the hot-spots in the pseudo-gap phase of cuprate superconductors. Performing the Hubbard-Stratonovich decoupling such that the free energy stays always real and physically meaningful we exhibit three solutions of the spin-fermion model at the hot spots. A careful examination of their stability and free energy shows that, at low temperature, the system tends towards a co-existence of charge density wave and the composite order parameter made of diagonal quadrupolar density wave and pairing fluctuations of Ref. [Nat. Phys. 9, 1745 (2013)]. The charge density wave is sensitive to the shape of the Fermi surface in contrast to the diagonal quadrupolar order, which is immune to it.
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https://hal-cea.archives-ouvertes.fr/cea-01060904
Contributor : Emmanuelle de Laborderie <>
Submitted on : Thursday, September 4, 2014 - 3:12:24 PM
Last modification on : Thursday, January 24, 2019 - 1:13:59 AM

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  • HAL Id : cea-01060904, version 1
  • ARXIV : 1408.5908

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C. Pépin, V. S. de Carvalho, T. Kloss, X. Montiel. Coexistence of pseudo-gap and charge order at the hot spots in cuprate superconductors. 2014. ⟨cea-01060904⟩

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